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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
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<head>
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<title>In Progress Releases</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<link rel="icon" href="/favicon.ico" type="image/ico" />
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<body>
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<div id="body">
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<div id="body-inner">
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<div id="content">
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<div class="section" id="intro">
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<div class="section-0">
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<div class="section-title">
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<h1>In Progress Releases</h1>
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</div>
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<div class="section-alert"><p>Note: The release notes
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on this page are for releases still under development.
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Please don't use this page as a source of information,
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it's here for development purposes only. Everything is
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subject to change.</p></div>
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<div class="section-body">
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<h2><span class=
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"news-title">Version 1.66.0</span></h2>
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<p><span class=news-date">In Progress</span></p>
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<div class="news-description">
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<div class="description">
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<div id="version_1_66_0.new_libraries">
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<h3><span class="link">New Libraries</span></h3>
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<ul>
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<li>
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<div>
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<em>TODO</em>
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</div>
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</li>
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</ul>
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</div>
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<div id="version_1_66_0.updated_libraries">
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<h3><span class="link">Updated Libraries</span></h3>
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<ul>
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<li>
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<div>
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<span class="library"><a href="/doc/libs/master/libs/atomic/">Atomic</a>:</span>
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<ul>
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<li>
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<div>
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Implemented a set of experimental extended atomic operations for
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integral types:
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<ul>
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<li>
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<div>
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<code><span class="identifier">fetch_negate</span></code>,
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<code><span class="identifier">fetch_complement</span></code>
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- atomically replaces the value with a negated or binary complemented
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value and returns the original value
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</div>
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</li>
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<li>
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<div>
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<code><span class="identifier">opaque_</span><span class="special"><</span><span class="identifier">op</span><span class="special">></span></code>
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- equivalent to <code><span class="identifier">fetch_</span><span class="special"><</span><span class="identifier">op</span><span class="special">></span></code> except that it doesn't
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return the original value
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</div>
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</li>
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<li>
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<div>
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<code><span class="special"><</span><span class="identifier">op</span><span class="special">></span><span class="identifier">_and_test</span></code>
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- atomically applies <code><span class="special"><</span><span class="identifier">op</span><span class="special">></span></code>
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and returns <code><span class="keyword">true</span></code>
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if the result is zero
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</div>
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</li>
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<li>
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<div>
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<code><span class="identifier">bit_test_and_set</span></code>,
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<code><span class="identifier">bit_test_and_reset</span></code>,
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<code><span class="identifier">bit_test_and_complement</span></code>
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- atomically sets, resets or complements the specified bit
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and returns the original value of the bit
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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Following C++17 (<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0558r1.pdf">P0558R1</a>),
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arithmetic operations for pointers to non-object types are no longer
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provided.
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</div>
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</li>
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<li>
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<div>
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Also following C++17 exposed <code><span class="identifier">atomic</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">value_type</span></code>
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and <code><span class="identifier">atomic</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">difference_type</span></code> member typedefs,
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where applicable, to the user's code.
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</div>
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</li>
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<li>
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<div>
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Improved compatibility with gcc 7. In particular, using 128-bit operations
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on x86-64 should no longer require linking with libatomic (the compiler-supplied
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library).
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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<span class="library"><a href="/doc/libs/master/libs/date_time/">DateTime</a>:</span>
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<ul>
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<li>
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<div>
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The library has been converted to use Boost.WinAPI as the abstraction
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layer for Windows SDK.
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</div>
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</li>
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<li>
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<div>
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Fixed an integral overflow that could cause incorrect results when
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adding or subtracting many years from a date (see <a href="https://stackoverflow.com/questions/45537280/boost-datetime-issue-with-adding-long-year-durations">here</a>).
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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<span class="library"><a href="/doc/libs/master/libs/iterator/">Iterator</a>:</span>
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<ul>
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<li>
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<div>
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<code><span class="identifier">next</span><span class="special">()</span></code>/<code><span class="identifier">prior</span><span class="special">()</span></code>
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functions now support user's iterators that don't specify nested
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types such as <code><span class="identifier">iterator_category</span></code>,
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<code><span class="identifier">difference_type</span></code>,
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etc. and instead specialize <code><span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator_traits</span></code>
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to define those types. The compiler must support C++17-compatible
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<code><span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator_traits</span></code> for this to work.
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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<span class="library"><a href="/doc/libs/master/libs/log/">Log</a>:</span>
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<ul>
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<li>
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<div>
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Bug fixes:
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<ul>
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<li>
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<div>
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Fixed a bug in <code><span class="identifier">file_collector</span><span class="special">::</span><span class="identifier">scan_for_files</span></code>
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that could cause incorrectly named log files in the target
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directory after the user's application restart.
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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See <a href="/doc/libs/master/libs/log/doc/html/log/changelog.html">changelog</a>
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for more details.
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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<span class="library"><a href="/doc/libs/master/libs/multi_index/index.html">Multi-index Containers</a>:</span>
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<ul>
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<li>
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<div>
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Made <code><span class="identifier">modify</span></code> and
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<code><span class="identifier">modify_key</span></code> more robust
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so that the modified element is erased if the modifier throws or
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the rollback functor does not properly restore the element (full
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discussion at ticket <a href="https://svn.boost.org/trac/boost/ticket/12542">#12542</a>). This is technically backwards
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incompatible; for instance, the following code:
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</div>
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<pre><span class="identifier">c</span><span class="special">.</span><span class="identifier">modify</span><span class="special">(</span><span class="identifier">c</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),[](</span><span class="keyword">auto</span><span class="special">&){</span><span class="keyword">throw</span> <span class="number">0</span><span class="special">;});</span>
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</pre>
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<div>
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keeps the container <code><span class="identifier">c</span></code>
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untouched in former versions of Boost whereas now <code><span class="identifier">c</span><span class="special">.</span><span class="identifier">begin</span><span class="special">()</span></code> is erased. Thanks to Jon Kalb for
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raising the issue.
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</div>
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</li>
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<li>
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<div>
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Maintenance fixes.
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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<span class="library"><a href="/doc/libs/master/libs/utility/">Utility</a>:</span>
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<ul>
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<li>
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<div>
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<code><span class="identifier">boost</span><span class="special">/</span><span class="identifier">next_prior</span><span class="special">.</span><span class="identifier">hpp</span></code> has been moved to Boost.Iterator.
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No changes needed to the user's code.
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</div>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<div>
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<em>TODO</em>
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</div>
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</li>
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</ul>
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</div>
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<div id="version_1_66_0.compilers_tested">
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<h3><span class="link">Compilers Tested</span></h3>
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<p>
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Boost's primary test compilers are:
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</p>
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<ul>
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<li>
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<div>
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<em>TODO</em>
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</div>
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</li>
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</ul>
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<p>
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Boost's additional test compilers include:
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</p>
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<ul>
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<li>
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<div>
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<em>TODO</em>
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</div>
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</li>
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</ul>
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</div>
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<div id="version_1_66_0.acknowledgements">
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<h3><span class="link">Acknowledgements</span></h3>
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<p>
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<em>TODO</em>
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</p>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div id="footer">
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<div id="footer-left">
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<div id="copyright">
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<p>Copyright Rene Rivera 2006-2007.</p>
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</div><!--#include virtual="/common/footer-license.html" --> </div>
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<!--#include virtual="/common/footer-banners.html" --> </div>
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